Blitzer and Trump go at it over Trump's ‘birther’ claims — (CNN) - Donald Trump did not back down Tuesday from his questioning of President Barack Obama's birthplace, instead arguing heatedly with CNN's Wolf Blitzer that “a lot of people do not think it was an authentic certificate,” …

Trump, Romney's surrogate, goes on ‘birther’ offensive — While the Obama campaign actively works to tie Mitt Romney to the controversial “birther” assertions of Donald Trump, the real estate mogul and reality show host is ramping up his focus on the purported conspiracy ahead of a campaign fundraiser …

Obama safe in Michigan — Barack Obama won't have to worry too much about holding Michigan for the Democrats this fall- he leads Mitt Romney 53-39 there, a lead little changed from PPP's last poll of the state in February when his advantage was 54-38. — Romney just doesn't have much of a home field advantage in the state.

New Sarah Palin approach; better results — Everyone has wondered who the Sarah Palin of 2012 would be. The answer is...Sarah Palin. — Palin's star power faded along with that of the other conservative Mitt Romney alternatives and her media presence has dwindled.

In Defense of Chris Hayes — The MSNBC host is getting beat up for remarks he made about the heroism of American soldiers. Really, his critics are the ones who should be apologizing. — Very few Americans wake up early on weekend mornings to watch public intellectuals chat.

Obama “Polish Death Camps” Comment Spurs Polish Outrage — The president referred to “Polish death camps” while awarding a posthumous Medal of Freedom to Polish professor Jan Karski, a hero of the anti-Nazi resistance. Poles believe they're blamed unfairly for the Nazi Holocaust.

“You clean up your own mess” — Why I will run a write-in primary campaign — Life is what happens to you while you're busy making other plans," John Lennon mused. How right he was. — Last Friday, shortly before a Memorial Day weekend wreath-laying commemorating and honoring …

The Role of Uncle Sam — From the dawn of the republic, the federal government has played a vital role in American economic life. Government promoted industrial development in the 18th century, transportation in the 19th, communications in the 20th and biotechnology today.